Proceed with merge

src/ifcgeom/AbstractKernel.cpp

@@ -0,0 +1,63 @@
+#include "AbstractKernel.h"
+
+#include "../ifcgeom/IfcGeomElement.h"
+
+#ifdef IFOPSH_WITH_OPENCASCADE
+#include "../ifcgeom/kernels/opencascade/OpenCascadeKernel.h"
+#undef Handle
+#endif
+
+#ifdef IFOPSH_WITH_CGAL
+#include "../ifcgeom/kernels/cgal/CgalKernel.h"
+#endif
+
+bool ifcopenshell::geometry::kernels::AbstractKernel::convert(const taxonomy::item* item, IfcGeom::ConversionResults& results) {
+	// std::stringstream ss;
+	// item->print(ss);
+	// auto sss = ss.str();
+	// std::wcout << sss.c_str() << std::endl;
+
+	try {
+		return dispatch_conversion<0>::dispatch(this, item, results);
+	} catch (std::exception& e) {
+		Logger::Error(e, item->instance);
+		return false;
+	}
+}
+
+const ConversionSettings & ifcopenshell::geometry::kernels::AbstractKernel::settings() const
+{
+	return conv_settings_;
+}
+
+ifcopenshell::geometry::kernels::AbstractKernel* ifcopenshell::geometry::kernels::construct(const std::string& geometry_library, const ConversionSettings& conv_settings) {
+	const std::string geometry_library_lower = boost::to_lower_copy(geometry_library);
+
+#ifdef IFOPSH_WITH_OPENCASCADE
+	if (geometry_library_lower == "opencascade") {
+		return new IfcGeom::OpenCascadeKernel(conv_settings);
+	}
+#endif
+
+#ifdef IFOPSH_WITH_CGAL
+	if (geometry_library_lower == "cgal") {
+		return new CgalKernel(conv_settings);
+	}
+#endif
+	
+	throw IfcParse::IfcException("No geometry kernel registered for " + geometry_library);
+}
+
+bool ifcopenshell::geometry::kernels::AbstractKernel::convert_impl(const taxonomy::collection* collection, IfcGeom::ConversionResults& r) {
+	auto s = r.size();
+	for (auto& c : collection->children) {
+		convert(c, r);
+	}
+	for (auto i = s; i < r.size(); ++i) {
+		r[i].prepend(collection->matrix);
+		if (!r[i].hasStyle() && collection->surface_style) {
+			r[i].setStyle(*collection->surface_style);
+		}
+	}
+	return r.size() > s;
+}